Finding the Third Proportional to 2,015,007 and 4,257,443

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015,007 : 4,257,443 = 4,257,443 : x
2. Step 2: Convert to fraction form
   2,015,007/4,257,443 = 4,257,443/x
3. Step 3: Cross multiply
   2,015,007x = 4,257,443 × 4,257,443
4. Step 4: Simplify right side
   2,015,007x = 18,125,820,898,249
5. Step 5: Solve for x
   x = 18,125,820,898,249/2,015,007
6. Step 6: Final answer
   x = 8,995,413.36